Have you upgraded your version of MVC? It might be that the web.config that resides in your Views folder have old/wrong MVC references. A tip in that case could be to create an new empty MVC project and then take the web.config from the Views folder from that new project and replace your existing.
Just tried that without success.
I have upgraded system.web.mvc from 5.2.3 to 5.2.4 but that doesn't change in the Views web.config so i manually tried to replace there as well without success.
Any other suggestions? :)
Have you looked at this?
I looking into an admin addon.
It is created with mvc razor.
But when I try yo use @using (Html.BeginForm from a view i get the following error:
System.Web.Mvc.HtmlHelper<"model">' does not contain a definition for 'BeginForm' and no extension method 'BeginForm' accepting a first argument of type"model">
Can anyone point me in the right direction?